Orbit Fit and Astrometric record for 559239

The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.

# Object: 559239    
# Created Sat Dec  4 02:08:15 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     61 observations of     61
# Arc:   6.21y
# First observation: 2015/01/19
#  Last observation: 2021/04/06
# Chi-squared of fit:    48.56 DOF:    116 RMS:  0.16
# Min/Max residuals:    -0.42    0.60
# Exact a, adot, b, bdot, g, gdot:
  1.875347E-05  6.576653E-02 -5.586236E-06 -2.021625E-02  5.311386E-02 -2.203145E-02
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
  -15.370512  131.399150    0.216254   -0.253714   -0.923596  2457041.933678
# Heliocentric elements and errors
Epoch:              2457042.5000  =  2015/01/20
Mean Anomaly:          275.59953 +/-     0.000
Argument of Peri:      342.16115 +/-     0.000
Long of Asc Node:      271.28955 +/-     0.000
Inclination:            22.32911 +/-     0.000
Eccentricity:         0.32527382 +/-    0.0000
Semi-Major Axis:     18.44769168 +/-    0.0000
Time of Perihelion: 2463827.5622 +/-       0.0
Perihelion:          12.44714045 +/-    0.0000
Aphelion:            24.44824291 +/-    0.0000
Period (y)               79.2358 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -12.47963343 +/-    0.0000
Ecliptic Y           14.47972152 +/-    0.0000
Ecliptic Z           -4.99054035 +/-    0.0000
Ecliptic XDOT        -0.00164001 +/-    0.0000
Ecliptic YDOT        -0.00327581 +/-    0.0000
Ecliptic ZDOT        -0.00070370 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   19.75636969 +/-    0.0000
Geocenter to KBO     18.82763660 +/-    0.0000
# Hcoef:  9.75

The following table shows the complete astrometric record for 559239. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (559239) followed by the observatory code and reference code for the source of the astrometry.

2015 01  19.43290  08 38 39.287  +02 33 06.10  21.7G 559239    F51  C~3471      
2015 01  19.44466  08 38 39.148  +02 33 06.57  22.3G 559239    F51  C~3471      
2015 01  19.45645  08 38 39.022  +02 33 06.67  22.6G 559239    F51  C~3471      
2015 01  19.46828  08 38 38.956  +02 33 06.60  21.3G 559239    F51  C~3471      
2015 01  21.38240  08 38 19.675  +02 33 42.47  22.7G 559239    F51  C~3471      
2015 01  21.39730  08 38 19.504  +02 33 42.60  22.1G 559239    F51  C~3471      
2015 01  21.41068  08 38 19.371  +02 33 42.86  22.5G 559239    F51  C~3471      
2015 01  21.42412  08 38 19.246  +02 33 43.04  22.6G 559239    F51  C~3471      
2015 03  20.24336  08 30 00.436  +03 11 02.82  22.4G 559239    F51  C~3471      
2015 03  20.25683  08 30 00.364  +03 11 03.24  22.6G 559239    F51  C~3471      
2015 03  20.27042  08 30 00.283  +03 11 03.76  22.7G 559239    F51  C~3471      
2015 03  20.28395  08 30 00.213  +03 11 04.38  22.7G 559239    F51  C~3471      
2015 03  22.26272  08 29 50.362  +03 12 36.23  22.2G 559239    F51  C~3471      
2015 10  28.62923  08 58 10.965  +01 11 03.62  23.1G 559239    F51  C~3471      
2015 12  05.59683  08 57 59.474  +00 32 47.39  22.7G 559239    F51  C~3471      
2015 12  06.51439  08 57 55.651  +00 32 10.03  22.8G 559239    F51  C~3471      
2015 12  08.54781  08 57 46.612  +00 30 50.39  22.5G 559239    F51  C~3471      
2015 12  08.56032  08 57 46.535  +00 30 49.96  22.7G 559239    F51  C~3471      
2015 12  08.57285  08 57 46.460  +00 30 49.93  21.7G 559239    F51  C~3471      
2015 12  08.58536  08 57 46.425  +00 30 49.18  22.3G 559239    F51  C~3471      
2016 01  10.54453  08 53 47.055  +00 21 35.24  22.6G 559239    F51  C~3471      
2016 01  10.55799  08 53 46.946  +00 21 35.38  22.6G 559239    F51  C~3471      
2016 01  10.57145  08 53 46.776  +00 21 35.26  22.9G 559239    F51  C~3471      
2016 01  10.58492  08 53 46.676  +00 21 35.42  22.7G 559239    F51  C~3471      
2016 01  12.43931  08 53 29.186  +00 21 45.99  22.5G 559239    F51  C~3471      
2016 01  12.45124  08 53 29.069  +00 21 46.06  22.7G 559239    F51  C~3471      
2016 01  12.46317  08 53 28.963  +00 21 46.17  22.6G 559239    F51  C~3471      
2016 01  12.47516  08 53 28.853  +00 21 46.28  22.4G 559239    F51  C~3471      
2016 02  10.34130  08 48 37.077  +00 33 01.64  22.4G 559239    F51  C~3471      
2016 02  10.35319  08 48 36.960  +00 33 02.30  22.6G 559239    F51  C~3471      
2016 02  10.36513  08 48 36.822  +00 33 02.81  22.1G 559239    F51  C~3471      
2016 02  10.37713  08 48 36.697  +00 33 03.26  22.2G 559239    F51  C~3471      
2016 03  02.31924  08 45 21.002  +00 48 42.47  21.9G 559239    F51  C~3471      
2016 03  02.33180  08 45 20.889  +00 48 42.86  22.5G 559239    F51  C~3471      
2016 03  02.34432  08 45 20.778  +00 48 43.32  22.5G 559239    F51  C~3471      
2016 03  02.35683  08 45 20.672  +00 48 44.40  22.3G 559239    F51  C~3471      
2016 03  25.30778  08 42 48.615  +01 08 35.62  22.7G 559239    F51  C~3471      
2016 04  04.25100  08 42 10.970  +01 16 53.89  22.5G 559239    F51  C~3471      
2016 04  04.26243  08 42 10.951  +01 16 54.41  22.5G 559239    F51  C~3471      
2016 04  04.27381  08 42 10.931  +01 16 55.02  23.8G 559239    F51  C~3471      
2016 04  04.28517  08 42 10.893  +01 16 55.37  22.1G 559239    F51  C~3471      
2017 01  03.51876  09 08 58.865  -01 54 02.34  22.3G 559239    F51  C~3471      
2017 01  03.52949  09 08 58.768  -01 54 02.49  22.5G 559239    F51  C~3471      
2017 01  03.54018  09 08 58.679  -01 54 02.56  22.7G 559239    F51  C~3471      
2017 01  03.55087  09 08 58.586  -01 54 02.70  22.0G 559239    F51  C~3471      
2017 01  31.41724  09 04 28.535  -01 49 07.17  22.3G 559239    F51  C~3471      
2017 01  31.42961  09 04 28.432  -01 49 06.93  22.6G 559239    F51  C~3471      
2017 01  31.44198  09 04 28.300  -01 49 06.08  22.6G 559239    F51  C~3471      
2017 01  31.45436  09 04 28.183  -01 49 05.91  22.9G 559239    F51  C~3471      
2017 03  13.29883  08 58 01.209  -01 17 25.07  24.0G 559239    F51  C~3471      
2017 04  11.28978  08 55 39.186  -00 50 03.11  21.8G 559239    F51  C~3471      
2017 12  28.51282  09 24 45.699  -04 13 56.89  22.4G 559239    F51  C~3471      
2020 02  26.06866  09 48 03.07   -09 06 05.4   21.1G 559239    X01  C~3qNn      
2020 02  26.11934  09 48 02.51   -09 06 02.4   22.2G 559239    X01  C~3qNn      
2020 03  25.06826  09 43 38.11   -08 34 20.3   21.4G 559239    X01  C~3qNn      
2020 03  25.14197  09 43 37.53   -08 34 14.5   22.3G 559239    X01  C~3qNn      
2020 03  25.18163  09 43 37.22   -08 34 11.1   22.3G 559239    X01  C~3qNn      
2021 04  06.301985 10 00 06.145  -11 02 46.68  22.0w 559239    F51  C~4i86      
2021 04  06.313711 10 00 06.055  -11 02 45.95  21.9w 559239    F51  C~4i86      
2021 04  06.325385 10 00 05.983  -11 02 44.67  22.0w 559239    F51  C~4i86      
2021 04  06.337053 10 00 05.907  -11 02 44.04  22.0w 559239    F51  C~4i86      

The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.

     1   0.0000      0.00     0.14       0.00    -0.13
     2   0.0000      0.00    -0.14       0.00     0.13
     3   0.0001      0.00    -0.23       0.00     0.03
     4   0.0001      0.00     0.60       0.00    -0.25
     5   0.0053      0.00     0.11       0.00     0.24
     6   0.0054      0.00    -0.17       0.00     0.08
     7   0.0054      0.00    -0.10       0.00     0.07
     8   0.0055      0.00     0.10       0.00    -0.01
     9   0.1638      0.00     0.04       0.00     0.15
    10   0.1638      0.00     0.04       0.00    -0.06
    11   0.1638      0.00    -0.09       0.00    -0.17
    12   0.1639      0.00    -0.06       0.00    -0.18
    13   0.1693      0.00    -0.33       0.00    -0.09
    14   0.7726      0.00     0.33       0.00     0.15
    15   0.8766      0.00     0.14       0.00    -0.04
    16   0.8791      0.00    -0.05       0.00     0.05
    17   0.8846      0.00     0.05       0.00    -0.18
    18   0.8847      0.00    -0.20       0.00    -0.13
    19   0.8847      0.00    -0.42       0.00     0.31
    20   0.8847      0.00    -0.04       0.00     0.03
    21   0.9750      0.00    -0.06       0.00     0.00
    22   0.9750      0.00     0.23       0.00     0.08
    23   0.9751      0.00    -0.40       0.00    -0.10
    24   0.9751      0.00     0.03       0.00     0.00
    25   0.9802      0.00    -0.06       0.00    -0.05
    26   0.9802      0.00    -0.08       0.00    -0.06
    27   0.9802      0.00     0.07       0.00    -0.03
    28   0.9803      0.00     0.17       0.00    -0.01
    29   1.0593      0.00    -0.03       0.00    -0.10
    30   1.0593      0.00     0.05       0.00     0.11
    31   1.0594      0.00    -0.18       0.00     0.16
    32   1.0594      0.00    -0.20       0.00     0.16
    33   1.1167      0.00     0.05       0.00     0.18
    34   1.1168      0.00    -0.04       0.00    -0.06
    35   1.1168      0.00    -0.11       0.00    -0.22
    36   1.1168      0.00    -0.11       0.00     0.23
    37   1.1797      0.00    -0.01       0.00    -0.11
    38   1.2069      0.00    -0.16       0.00     0.01
    39   1.2069      0.00     0.07       0.00    -0.03
    40   1.2070      0.00     0.28       0.00     0.03
    41   1.2070      0.00     0.23       0.00    -0.17
    42   1.9578      0.00     0.06       0.00     0.05
    43   1.9578      0.00    -0.01       0.00    -0.01
    44   1.9579      0.00     0.04       0.00     0.01
    45   1.9579      0.00     0.02       0.00    -0.04
    46   2.0342      0.00    -0.34       0.00    -0.13
    47   2.0342      0.00     0.08       0.00    -0.24
    48   2.0342      0.00     0.08       0.00     0.25
    49   2.0343      0.00     0.29       0.00     0.07
    50   2.1461      0.00    -0.05       0.00     0.08
    51   2.2255      0.00     0.12       0.00     0.06
    52   2.9407      0.00     0.07       0.00    -0.04
    53   5.1024      0.00    -0.03       0.00    -0.18
    54   5.1025      0.00    -0.13       0.00     0.01
    55   5.1790      0.00     0.06       0.00    -0.10
    56   5.1792      0.00     0.03       0.00     0.08
    57   5.1793      0.00     0.03       0.00     0.44
    58   6.2118      0.00     0.09       0.00     0.07
    59   6.2119      0.00    -0.09       0.00    -0.18
    60   6.2119      0.00     0.00       0.00     0.12
    61   6.2119      0.00     0.03       0.00    -0.24

The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.

559239    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        18.411    18.411    18.411
ecceobj         0.323     0.323     0.323
incobj         22.314    22.314    22.314
qmin           11.300    11.664    11.264
qmax           25.176    25.006    25.095
amean          18.124    18.277    18.129
amin           17.716    17.920    17.648
amax           18.611    18.587    18.598
emean           0.341     0.338     0.353
emin            0.320     0.320     0.320
emax            0.374     0.359     0.378
imean          23.778    23.579    23.738
imin           22.436    22.475    22.167
imax           24.675    24.124    24.443
excite_mean     0.528     0.524     0.536
fracstop        0.014     0.009     0.020
cjmean          3.000     2.996     2.992

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
libcent 1      -180.0    -180.0    -180.0
libamp  1      -180.0    -180.0    -180.0
libcent 2      -180.0    -180.0    -180.0
libamp  2      -180.0    -180.0    -180.0
libcent 3      -180.0    -180.0    -180.0
libamp  3      -180.0    -180.0    -180.0
libcent 4      -180.0    -180.0    -180.0
libamp  4      -180.0    -180.0    -180.0

kozaimean       143.4     102.4     169.9
kozaiamp        178.2     178.2     178.2